Hi everybody I have a new XENServer in my ISP and i want to install 3 VM in this server ! 1- Radius Server(Such as IBSNG) 2- ELASTIX Server (8 Analog Line and 25 Digital Line) 3- Windows server 2008R2 (for Accounting Server ) so , i dont know about Hardware minimum and Maximum for phisical server and how much resource needed for each Vm ! Thanks.